ON-FARM HEAP STORAGE OF POTATOES: EVALUATION IN NORTH-EASTERN PLAINS OF INDIA

Abstract

An improved heap storage technology with the use of sprout inhibitor CIPC (isopropyl N-(3-chlorophenyl) carbamate) has been recommended for short-term storage of table and processing potatoes. Trials were conducted in Eastern plains to study the storage environment in the heap and evaluate storability and processing quality of potatoes up to 90 days. Inside the heap, maximum temperatures were lower (by 1-4°C) and mean relative humidity was higher (by 1-10%) as compared to the ambient. Sprouting in tubers was inhibited and losses in potatoes were reduced by 45-47% at two out of three locations in CIPC treated heaps. Reducing sugar content remained low (<128 mg/100 g fresh weight), chip colour improved during storage and was highly acceptable in CIPC treated potatoes. Results suggest a great potential for heap storage of potatoes in Eastern plains to get remunerative prices.